Compilare: user.cpp: In function ‘bool BFS()’: user.cpp:43:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L[node].size(); ++i) { ^ user.cpp: In function ‘void DFS(int)’: user.cpp:64:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L[node].size(); i++) { ^ user.cpp: In function ‘void DFS2(int)’: user.cpp:87:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L[node].size(); i++) { ^ user.cpp: In function ‘void findFlux()’: user.cpp:111:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < L[n].size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:197:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Sol.size(); i++) ^